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<?php |
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declare(strict_types=1); |
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namespace UMA\JsonRpc; |
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use Psr\Container\ContainerInterface; |
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use UMA\JsonRpc\Internal\Input; |
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/** |
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* Experimental concurrent Server. Needs the pcntl extension, |
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* therefore it can only work in the CLI SAPI. |
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* |
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* /!\ Probably NOT fit for production usage. |
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*/ |
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class ConcurrentServer extends Server |
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{ |
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public function __construct(ContainerInterface $container, int $batchLimit = null) |
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{ |
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if (!\extension_loaded('pcntl')) { |
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throw new \RuntimeException('ConcurrentServer relies on the pcntl extension'); |
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} |
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\pcntl_async_signals(true); |
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parent::__construct($container, $batchLimit); |
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} |
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protected function batch(Input $input): ?string |
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{ |
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\assert($input->isArray()); |
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if ($this->tooManyBatchRequests($input)) { |
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return self::end(Error::tooManyBatchRequests($this->batchLimit)); |
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} |
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$children = []; |
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$responses = []; |
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foreach ($input->data() as $request) { |
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$pair = \stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, STREAM_IPPROTO_IP); |
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$pid = \pcntl_fork(); |
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if (0 === $pid) { |
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\fclose($pair[0]); |
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\fwrite($pair[1], $this->single(Input::fromSafeData($request)) . "\n"); |
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\fclose($pair[1]); |
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exit(0); |
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} |
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\fclose($pair[1]); |
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$children[$pid] = $pair[0]; |
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} |
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foreach ($children as $pid => $socket) { |
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\pcntl_waitpid($pid, $status); |
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if ('' !== $response = \trim(\fgets($socket))) { |
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$responses[] = $response; |
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} |
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\fclose($socket); |
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} |
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return empty($responses) ? |
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null : \sprintf('[%s]', \implode(',', $responses)); |
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} |
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} |
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1ma /
JsonRpc
In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.